We cannot ascertain from our time-limited simulations whether (and how) vorticity fades away.
Part of this vorticity disappears by atom evaporation; however, one
should have in mind that in spite of being highly excited states of the system, the simultaneous constraints of energy
and angular momentum conservation
would prevent the decay of vortex lines in a helium droplet.[1]} It might thus appear that vortex lines in helium droplets
are rather stable. As a matter of fact, they have been detected in large droplets on the millisecond timescale.[2]}, [3]}
